function initTimer()
    global T_findPIE T_expandFor T_elementQ T_findR T_prunePIE T_findQ
    T_findPIE = 0;
    T_expandFor = 0;
    T_elementQ = 0;
    T_findR = 0;
    T_prunePIE = 0;
    T_findQ = 0;

    global N_findPIE N_expandFor N_elementQ N_findR N_prunePIE N_findQ
    N_findPIE = 0;
    N_expandFor = 0;
    N_elementQ = 0;
    N_findR = 0;
    N_prunePIE = 0;
    N_findQ = 0;

